Formula: FeS
Origin of name: for Dominico Troili, Italian natural scientist
Crystal system: hexagonal
Crystal class: -6m2
Twinning:
Unit cell:
Colour: light grayish brown, rapidly tarnishes bronze-brown
Diaphaneity: opaque
Luster: metallic
Habit: massive, compact granular
Hardness: 3.5 to 4
Specific gravity: 4.67 to 4.82
Cleavage: none
Tenacity:
Streak: black
Synonyms/varieties:
Comments:
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